Posted 04-26-2003 at 08:55:58
[Reply] [No Email]Like any screw, clockwise tightens them and restricts the gas flow past the needle thus leaning the mixture - in fact if you don't know where it is set or you've taken a needle valve out, just screw it all the way (finger-tight) in til it stops, then back out 3/4 turn and it should be close enough to start.